iRobot® Roomba® j7+ (7550) Self-Emptying Robot Vacuum – Identifies and avoids obstacles like pet waste & cords, Empties itself for 60 days, Smart Mapping, Works with Google, Ideal for Pet Hair

I've been an owner many years of a 690 Roomba and the J7+ is a quantum leap. It's fun to watch as you see the learning process and how it avoids things like my dogs, power cords and other items in its path. The roller brush system stays very clean and its much more efficient than the old brush system. I find it easy to clean and maintain. No more light towers like the old units. It maps your home and allows you to draw room boundaries, name your rooms and choose what rooms you are going to clean. I have a beagle/dachshund that sheds big time and again the improvement in technology is wonderful. No more dog hair! The self empty feature is wonderful and it's interesting that when the dirt container in the J7 fills, it scamper back quietly to its base and empties itself. Then amazingly it scampers right back to the spot it was cleaning and resumes finishing the cleaning. Same thing happens if the battery goes low. It scampers back to its dock and you get a message from the app that it is recharging with an estimate as to how long it will be before it resumes cleaning. Because it knows how much cleaning is left, you don't have to wait for a full charge too. I love that after it completes the map of your home shows the obstacles if any, that it encountered. Additionally you get pictures of obstacles and you can let the J7 know if those were temporary obstacles, or whether you want it to avoid that obstacle in the future. It's funny to see a picture of my dog laying down in its path. I notice that now if it gets in the path of my dog it will stop before hitting the dog, and turn another direction. It's quiet too. Much quieter than my old 690. My dogs pretty much ignore it as it moves along the floor. Also noticeable is that it will turn off the vacuum motor when it is traveling to specific rooms or when it is returning to its base. Fit and finish is good and yes it does not run over wires or cords or doggie droppings!